Improvement in obtaining bisulphide of carbon from gas-lime



UNITED STATES PATENT OFFICE.

JULIUS KIRCHER, OF NEW YORK, N. Y.

IMPROVEMENT IN OBTAINING BISULPHIDE OF CARBON FROM GAS-LIME. he.

Specification forming part of Letters Patent No. 138,504, dated May 6, 1873; application filed October 19, 1872.

To all whom it may concern:

Be it known that I, JULIUS KIRGHER, of the State, county,'and city of New York, have invented a certain Process of Obtaining, cheap- 1y, Bisulphide of Carbon from the Refuse Lime, Iron, or other materials which have been used to cleanse and purify coal gas in gas-manufactories, of which the following is a specification:

My method of doing the same is as follows: I

heat, and vapors of bisulphide of carbon are produced.

The gas-lime, gas-iron, or other material can also be mixed with from one-tenth to one-quarter of its weight of pulverized, charred, or othercoal; then quicklyheated until it is raised to a light-red heat, and thus forms in a vaporous condition the bisulphide of carbon. This vapor is received into a suitable receptacle, and cooled by ice-water or in the other ordinary modes of condensation.

What I claim is-- The production of bisulphide of carbon, in the manner andby the process above-described, from the waste material used in the manufacture of coal gas.

JULIUS KIROHEB. 'Witnessesi E. W. TYLER, LEWIs S. TH OMAS. 

